Plow.



E. M. HEYLMANJ PLOW. APPLICATION TILED MAY16, 1913.

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Patented. Dec. 16,1913

WITNESSES [NV/ N TOR MAN, of South Bend, in' the count may be of malleable or cast metal.

UNITED STATES PATENT oFnIcE.

EDWARD M. HEILMAN, or scorn BEND, mnmnmassronon T0 OLIVER CHILLED.

. stow WORKS, or SOUTH BEND, INDIANA.

snow. I

Specification of Letters Patent.

Patented Dec. 16, 1913.

Application filed May 15, 1913. Serial No. 767,937.

To all whom it may concern:

Be it known that I, EDWARD M. 0 t. Joseph and State of Indiana, have invented certain new and useful Improvements in Plows; and I do hereby declare the following tobe a full, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use the same.

My invention relates to an improvementin plows.

. In gang plows as now constru ed, the gangs are of such width and the-p ows so close together, that-it is difiicult to get at the bolts and nuts for the removal and replacement of the'blades, and the object of this invention is to provide means, operable from the rear of the plow, for securing the blade to the frog, thus dispensing entirely with the use of bolts and nuts now universallyused for securing theseparts together, and permitting the blade to be rer'novedand replaced from the rear of the plow.

With these ends in view my inventionconsists in the parts and combination of parts and in the details of construction as will be more fully-described and pointed outin the claims. 7

In'the accompanying drawings, Figure 1 is a view in perspective taken from the underside of the plow; Fig. 2 is a viewin section on the line {IF-70) ofFig. 1; Fig. 3. is a view on the line y-3 of Fig. 1; Fig. 4.- is a view of the locking lever detached, and Fig. 5 isa view in elevation showing the p111 for locking the point of the plow to the frog. 1 represents the frog of the plow wjlhich t is approximately V-shape in cross section, one side member of which carries the moldboard 2, and the other side member carries the landside 3, the said moldboard and landside being secured to the frog by bolts and nuts. The lower end or foot of the frog 1 is enlarged and projects below the moldboard and in front of the latter, and also in front of the landside, to form a-support for the blade or wing 4.

The lower end or foot of the frog is pro? vided with a -slot'5, which projects rearwardly and upwardly for thelpassage of the .headed'thimble 6 mounted on the bolt 7, secured to the blade 4. The slot 5 should be considerably wider than the thimble 6,. so that the wall of s1ot5 will never contact with the. thimble 6, as a contact between the thimble and front wall of slot would prevent the eccentric or cam face of lever 14, to be hereinafter referred to, from forcing blade 4: endwise.

The head of bolt 7 rests in a countersunk thereof extends rearwardly and is bent at its free end, to form an abutment for the handle nut 11. This abutment is provided with ahole for the passage of-the link rod 12, the handle nut 11 being secured on the threaded end of said link rod and bearing against the abutment at the rear end of bracket 10.

Pivotally mounted on.a stud 13 projecting I from therear face of frog 1, at one side of the slot 5(is thelever 14, provided at a point intermediateits ends with a slot 15 open at therear, the side walls 16 of the slot being wedge shape. and its front side wall being eccentric with the pivot of lever 14, so that when the lever is drawn into looking position by the handle nut 11. the eccentric wall of the, slot contacting with the thimble forces the landside of the blade into close contact with the 'landside section of the frog and lower edge of the mold board and also draws the rear end-of the landside of the blade or nose into close contact with the.

when the thimble 6on bolt-7 is entered in said slot 5, the slot 15 will beinline with .the thimble. The free end of lever 141s ried by they have been assembled and locked. Thelever 14 maybe turned forwardly to clear the slot 5, thus permitting the thimble 6 carthe blade 4 to be entered in a slot 5, after which the lever 14 is pulled rearwardly until it engages the thimble. Bynow connecting the link 17 of rod 12 with the free end of lever 14, and turning the handle-nut in a direction to drawthe rod 12 rearwardly, the rear" edge of the back solidly into continuous contact with the blade will be drawn frog and also with the front end of-the'moldboard and landside, and the wedge shaped walls 16, of slot 15, contacting with the head of thimble 6, will draw the blade inwardly into closecontact with thefoot ofthe' frog. The inner 'face of the landside section of the nose of the blade is provided with a lug 19 adapted to rest against a cam face 20 on the lower end of the frog. This lug is locatedlabout midway .the point or nose of the frog, and the side section of the nose of the blade, and

operates to efl'ectuallv hold the blade in cOntact with the foot of the frog against a force tending to depress or elevate thenose or point of the blade. The heel end of blade 4 is held against rearward deflection by the plate-21 secured to the mold board and overlapping the under face of the prevented from outward bending by the plate 22 secured to the rear faceof the blade and overlapping the lower end of the mold hoard. These two plates 21 and 22 serve to hold the meeting edge of the mold board and blade in perfect alinement after the parts have been assembled.

With this improvement, by simply disconnecting the link rod from the lever, the blade will be free to be removed by the application of pressure to the heel thereof, and a new one may be passed under the plow from the rear and over the projecting end of the foot of the frog and positively secured against the possibility of accidental displacement by the lever and link rod as previously described,

It is evident that many slight changes might be made in the relative arrangement of parts shown and described without de- 5 parting from the spirit an'cl'scope of my invention. Hence I would have it understood that I do not wish to confine myself to the exact construction and arrangement of parts shown and described, but Having fully described my invention what I claim as'new and desire to secure by Letters Patent, is

1. In a plow, the combination with a frog,

rear end of the landblade, and is.

board overlapping the rear face of mold board and blade, the frog having an open slot in its front lower end, and the blade provided with a projectionto enter said slot, of a lever pivoted to said frog and adaptedto engage said projection and lock the same in the slot in the frog, a rod connected with said lever and means for locking the rod.

2. In a plow, thecombination with a frog, mold board and blade, the frog having an open slot in its'front lower end and the blade provided with a said slot, of a lever pivoted at one end to the projection onthe blade, and a screw rod connected with the opposite end of said lever for locking the latter in contact with the projection 'on the blade.

3.'In a low, the combination moldboar and blade, open slot in its front lower end and the bladeprovided with a headed projection to enter said slot, of a lever pivotedat one end to the frog and provided with a slot, the side walls of which are wedge shaped to engage the head of the projection and draw the blade into close contact with the foot of the frog, a screw rod detachably secured with a frog, the'frog having an locking the screw rod and lever against accidental movement.

moldboard an blade, open slot in its front blade provided with a under the foot of the frog on thelandside of the plow, and with a headed projection to enter. the slot in the foot y lever pivoted to the frog and adapted to restin front of the projection in the slot of the frog, a link rod detachably secured to the free end of said lever and passin through a fixed abutment and a nut screwed Onto said rod for locking it'in place. 7

In a plow, the combination with a fro ha ring an 0 en slot in its lower end, a mol board, a b ade, 3. projection-on. the mold the blade, e overlapping the the frog having an lug adapted to take a projection on the blad projection to enter to the free end of said lever and means for 4. In a plowa the combination with a frog,-

of the frog, a

the frog and provided with a slot to receive lower end, and the.

rear face of the moldboard, a bolt carried by p z the mold board and adapted to rest in'the slot in the frog, a lever pivoted to the frog ran-i crossing the slot in front of the bolt, a link rod detachably engaging the free end I of said lever and passing througha fixed abutment and a nut for locking said rod and i lever in place. V 1

6. In a plow the combination with a frog, mold'board and blade, the frog havin open slot in its front lower end, and a 15 ads provided with a projection to enter said slot, of a lever pivoted to said frog and prol videdwith a s at which is eccentric to the pivot of the lever, the said slot adapted to specification in the presence of-two subscribreeeive the projection on. the blade and by ing Witnesses. its cam action draw the landside 0f the blade solidly against the landsi de section EDVARD HEYLMAN' 5 of the frog, and means for actuating said Witnesses:

lover. EDWIN NICAR. e

In testimony whereof, I have signed this KATE E. BUOL 

